Pipe-coupling.



G. W.'MILLAR.`

PIPE coUPLING.

` APPLICATION FILED MAY 5, 1903. I 923,681 Patented June 1,1909.

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srnfrns GEORGE W. MILLAR, OF ST. LOUIS, MISSOURI.

PIPE-COUPLING.

Speccation of Letters Patent.

Patented June 1, 1909.

Application led May 5, 1908. Serial No. 430,907.

To all whom t may concern:

Be it known that I, GEORGE W. MILLAR, a citizen of the United States,and a resident of St. Louis, in the county of St. Louis City and Stateof Missouri, have invented a new and Improved Pipe-Coupling, of whichthe following is a full, clear, and exact description.

This invention relates to pipe couplings, and is particularly useful inconnection with lead pipes to join the ends thereof without the use of awipe or other joint.

More specifically, the invention relates to a pipe coupling havingsectional tubular expanders provided with tapered portions adapted to beinserted in pipe ends, sectional collars arranged to be mounted upon thepipe ends to jam the same upon the expanders, and sectional clampsencompassing the collars, and each engaging one of the expanders to holdthe same in position, one of the clamps engaging both of t e expandersto secure the parts together.

An object of the invention is to provide a simple, strong and durablepipe connection, by means of which the ends of two lead pipes can beeasily and quickly joined, and which is inexpensive to manufacture, andsimple in its operation. v

A further object of the invention is to provide a device of the classdescribed which comprises a plurality `of sectional, tubular partswhereby the parts can be disengaged rapidly, by separating them intotheir sections.

A still further object ofthe invention is to provide a pipe coupling bymeans of which the ends of a lead pipe and an iron or other pipe can bejoined, and by means of which, further, pipes of different diameters canbe cou led.

e invention consists in the construction and combination of parts to bemore fully described hereinafter and particularly set forth in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis speciiication, in which similar characters of reference indicatecorrespondingparts in all the views, and in which- Figure 1 is alongitudinal section of my pipeJ coupling showing the same as it is usedin joining the ends of two lead pipes, and having certain of thesectional parts dislaced, Fig. 2 is a transverse section on the ine 2 2of Fig. 41; Fig. 8 is a transverse section on the line 8-3 of Fig. 1;and Fig. 4 is a longitudinal section showing a modified form of mycoupling used to join a lead pipe and an iron pipe of differentdiameters.

Before proceeding to a more detailed explanation of my invention, itshould be clearly understood that the same is particularly useful inconnecting the ends Vof lead pipes, in a manner such that an air andliquid tight joint is formed, while at the same time is obviated thenecessity of a permanent joint, such as a wipe joint.

The coupling can be advantageously used in plumbing work of variouskinds, in coupling the ends of lead pipes incasing electric or othercables, and in other work in which it is necessary to join the separatedor severed ends of tubular conduits.

Y The device can be fashioned from any suitable material such as castiron, brass or the like.

Referring more particularly to the drawings, 10 and 11 represent theends of two lead pipes which are joined or connected by means of mycoupling. A. sectional, tubular expander 12, having a tapered portion13, has the latter inserted in the end of the pipe 10, which is expandedthereby, as isl shown most clearly in Fig. 1. The expander has athreaded projecting end 14 and between the latter and the taperedportion, alaterally extended iiange 15. The expander comprises similar,symmetrical sections which can be placed in position singly or together.A second, sectional, tubular expander 16, having a tapered portion 17 isinserted in the end of the pipe 11 to expand the same. The expander 16has at the projecting end, a laterally extended flange 18. The ends ofthe pipes 10 and 11 abut respectively against the flanges 15 and 18 ofthe expanders. A gasket or washer 19 may be provided betweenthe adjacentends of the expanders to insure a tight joint.

Upon each of the outwardly tapered pipe ends 10 and 11 is mounted asectional collar 20 suitably tapered to jam the pipe end tightly uponthe expander therewithin when the collar is forced toward the extremityof the pipe. The collars comprise similar and 'symmetrical sectionswhich have at adjacent edges a plurality of integral dovetailed ears 21provided with registering openings in which is arranged a screw 22acting as a hinge iin. At the other edges the collar sections llave ears23 provided with openings to reoeive a locking screw or bolt 24. Betweenthe edges of the collars maj;v be placed gaske or washer strips 25. 1twill be understood that the eollar sections are hinged together and canbe permanently7 seeured, one to the other, at the et ges opposite to thehinge, b v ieans of the ears 23 and the locking screw 24. A sectionalslamp 25 con'iprising similar and symmetrical sections, is mounted uponthe collar 20 carried. bv the pipe 10 and has an interiorlj,T threadedpart 27 which engages the corresp'ondinghr threaded end 2S ol" thecollar. At the end, the slamp has an inwardljf disposed flange 29 whiohengages the Vliango 15 at the side thereof remote from the pipo end 10.'l` he sections oll the clamp are provided at the edges with ears 30adapted to receive bolts or serews 31. to hold the clamp sectionstogether. ldlasher or gasket strips 32 may be arranged between the edgesol' the clamp sections, to torni tight joints. A washer or gasket 33 isprel'crahljf positioned between the flange 15 and the flange 29 toinsure a tight engagement oll the parts.

A seetional clamp sleeve is mounted upon the pipe end 11 and comprisessimilar and symmetrie-al seotions having cars 35 at the edges, which areadapted to be scoured tightly together b v means ol' screws or bolts 31.Gasket or washer strips are preforabhT arranged between the edges of thesections to insure a tight joint. rl"he sleeve has one end 37interiorljf threaded so that it can operatively engage thecorrespondingly threaded end 28 ol` a collar 20. rlhe sleeve, further,has a shoulder 38 'formed by the oonstrcted end 39. rfhe shoulder isarranged to engage at the flange 18 of the expander 16. A washer orgasket 40, is prelierabl;T arranged between the shoulder 38 and theiiange 1S. The end 39 ol the sleeve is interior-lyv threaded to engagethe correspondingly threaded end 14 of the expander 12 to eilect thecoupling of the parts.

Bv suitablj,7 turning the clamp and the clamping sleeve, the collars areforoed longitudinally of the pipe ends toward the extremities of thesame, and thus jain the eX- panded pipes upon the expanders 12 and 16.At the same time, the flange 29 and the shoulder 38 are 'forced againstthe iianges 1.3 and 18, whieh, owing to the interposition o' the washersor gaskets, form tight joints therewith. At the same time, theconstrioted end 39 of the clamp sleeve, owing to its engagement with thethreaded portion 14 of the expander 12, forces the ends ol the expanderstogether and these, together with the interposed washer or gasket, forma tight joint. l?? hen it is desired to release the parts, this can beeffected rapidly, loosening the screws 24 and 31 to separate the tubularmembers into their respective sections, and thus the joint can be takenapart without unscrewing the clamp and clamping sleeve.

lt so desired, washer or gasket strips 41 san also be plat-.ed betweenthe sections ol' the expander-s 12 and 1G.

ln VFig. 4 is shown a method oi i'orining a coupling between a lead pipeand an iron or other pipe which are ot dillorent diameters. An expander42 is employed which has a constricted threaded opening lormed toreceive the suitablyT threaded end ol the smaller pipe 43. rlhe largerpipe 10 has the tapered expander inserted therein in the usual manner.One of the collars 2() is employed and a reducing clamp 44 having aninwardly disposed flange 4 5 adapted to engage the llange 16 ol theexpander. The reducing clamp, like the collar 20, is sectional, and hasears 1.7 at th(` edges o1 the sections, which can be secured together bymeans oli screws or bolts 18.

Having thus described in v invention, l claim as new, and desire tosecure b v vlmtters Patent:

1. A coupling, comprising sectional expanders each adapted to beinserted in a pipe end, sectional collars, each adapted to be arrangedupon a pipe end, and a sectimial clamping sleeve adapted to engage bothsaid expanders and to connect the saine, said sleeve being removablysecured to one ot said collars.

2. A coupling, comprising sectional ex panders, each adapted to beinserted in a pipe end, sectional collars, each adapted to be arrangedupon a pipe end, a sectional clamp adapted to be adjustably carried byone o" said collars and engaging one of said expainlers to jam the samein position, and aclaniping sleeve adapted to be arranged upon thc otherot said collars and engaging the other of said expanders, said sleevebeing 'formed removablT to engage the iirst o'l said expanders to effectthe coupling.

3. A coupling, comprising a sectional, tubular expander adapted to beinserted in a pipe end, said expander having a threaded portion and aflange, a second sectional, tubular expander adapted to be inserted in apipe end and having a llangc, sectional tas pered collars each adaptedto be mounted upon a pipe end and having threaded portions, a sectionalclamp having a threaded portion adapted to engage the threaded portionol one of said collars and having a llange adapted to engage theila-ngeol said vlirst cnpander, and a clamping sleeve having a threadedportion adapted to engage the threaded portion ol the other ofsaidcollars and having a shoulder adapted to engage the flange ol thesecond of said expanders, said sleeve having a part formed removably toengage the threaded portion olE said ilirst expander to el'l'ect thecoupling.

4. A coupling, comprising a sectional expander having a tapered endadapted. to be inserted in a pipe end, a threaded end, and intermediatesaid ends a flange, a second sec llo lfll) tional expander havingatapered end adapted to be inserted in a pipe end, and a flange,sectional tapered collars adapted to be mounted upon the pipe ends andhaving threaded portions, a sectional clamp, threaded adjustably toengage one of said collars, and having an inwardly dis osed flangeadapted to engage said flange or said first expander, and a clampingsleeve having aportion threaded adj ustably to engage the other of saidcollars and having a shoulder adapted to engage said flange of saidsecond expander, said sleeve having a constricted, interiorly threadedpart adapted to engage said threaded end of said first expander, saidsectional parts having means for removably securing the sectionstogether.

5. A coupling, comprising expanders, each adapted to be inserted in apipe end, collars each adapted to be arranged upon a pipe end, and aclamping sleeve adapted to be removably mounted upon one of said collarsand to engage both of said expanders.

6. A cou ling, comprising expanders each adapted toIbe inserted in apipe end, collars each adapted to be arranged upon a pipe end,

one of said collars serving to hold the first of said expanders inplace, and a clamping sleeve adapted to be removably mounted upon thesecond of said collars and serving to hold the second of said expandersin place, said sleeve engaging the first of said expanders andconnecting said expanders.

7. A coupling, comprising expanders, each having a tapered portionadapted to be inserted in a ipe end, collars each adapted to be arrangeupon a pipe end, a clamp adapted to be adjustably carried by one of saidcollars and engaging one of said expanders to jam the same in position,anda clamping sleeve ada ted to be arranged upon the other of said colars and engaging the other of' said ex anders, said sleeve being formedremovably to engage the rst of said expanders to eect a coupling.

In testimony whereof I have signed my name to this specification in thepresence of tWo subscribing Witnesses.

GEORGE W. MILLAR.

Witnesses:

JAS. M. KENNEDY, M. CAsWELL LEWIS.

